Gatling Laser Ammo Fix Mod
MODSome configurable, scripted magic to rework some of vanilla's stupid fusion core mechanics
Works with any weapon, added by a mod or otherwise, that uses a compatible ammo type (which is only Fusion Cores, unless you have one of the supported mods below).
Unlike those mods, however, I found a really neat hack that enables me to only require this temporarily, so that once GLAF has finished setting up a weapon it no longer uses that attachment point, and other mods are free to use it afterwards.
